element_type.pass.cpp revision bc8d3f97eb5c958007f2713238472e0c1c8fe02c
1//===----------------------------------------------------------------------===// 2// 3// ��������������������The LLVM Compiler Infrastructure 4// 5// This file is distributed under the University of Illinois Open Source 6// License. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9 10// <memory> 11 12// template <class Ptr> 13// struct pointer_traits 14// { 15// typedef <details> element_type; 16// ... 17// }; 18 19#include <memory> 20#include <type_traits> 21 22struct A 23{ 24 typedef char element_type; 25}; 26 27template <class T> 28struct B 29{ 30 typedef char element_type; 31}; 32 33template <class T> 34struct C 35{ 36}; 37 38template <class T, class U> 39struct D 40{ 41}; 42 43int main() 44{ 45 static_assert((std::is_same<std::pointer_traits<A>::element_type, char>::value), ""); 46 static_assert((std::is_same<std::pointer_traits<B<int> >::element_type, char>::value), ""); 47 static_assert((std::is_same<std::pointer_traits<C<int> >::element_type, int>::value), ""); 48 static_assert((std::is_same<std::pointer_traits<D<double, int> >::element_type, double>::value), ""); 49} 50